NBC News anchor Jenna Wolfe announced some shocking news on the Today Show Wednesday, revealing that she's expecting a baby girl with her partner, Stephanie Gosk.

"My girlfriend, Stephanie Gosk, and I are expecting a baby girl the end of August," Wolfe wrote in a blog post. "As of this week, I am about five months pregnant."

The couple had been together for two years, although they did not come out publicly with the announcement, NBC reported.

Wolfe appeared to be excited on the same day of the announcement when she tweeted, "Well... Here we go!! @todayshow."

"I don't want to bring my daughter into a world where I'm not comfortable telling everyone who I am and who her mother is," Wolfe told People.

Wolfe will blog about her experiences for the Today show, and published her first entry Wednesday. She described the pregnancy as "the biggest and best adventure of our [her and Gosk] lives."

In the post, the anchor credited Gosk as a phenomenal journalist and said that their new addition to the family is the greatest achievement of their lives.

"Stephanie, a foreign correspondent here at NBC, spent years in war-torn countries, risking life and limb in the most dangerous places on earth to tell amazing stories. ... Between the two of us, we've seen and we've done more than most will in a lifetime," she wrote.

Wolfe said that she and and Gosk wanted to expand their family and have talked about the new addition for some time. Wolf called it the "best decision" the couple has made.

"The more we talked about it, the better the idea seemed. And so in December, we embarked on Operation Baby," Wolfe wrote.

The baby news comes days after the The Human Rights Campaign, an organization in support of gay marriage is running a social media initiative as the Supreme Court addresses the issue by hearing a number of same-sex cases.

Wolf said that out of all her crazy adventures, being pregnant is still surreal to her.

"I jet-packed 30 feet out of the water,' 'I scaled the tallest building in Canada'), nothing garnered more shock and awe (and, yes, some tears) than when I told people I was pregnant," she wrote in her blog.